| static CICell msdoscurrent = 0;␊ |
| static int msdosrootcluster = 0;␊ |
| static int msdosfatbits = 0;␊ |
| static int msdosCacheBlockSize = 0;␊ |
| ␊ |
| #if UNUSED␊ |
| /*␊ |
|
| ␉␊ |
| ␉if (msdoscurrent == ih)␊ |
| ␉{␊ |
| ␉␉CacheInit(ih, msdosCacheBlockSize);␊ |
| ␉␉CacheInit(ih, msdosclustersize);␊ |
| ␉␉return 0;␊ |
| ␉}␊ |
| ␉␊ |
|
| ␉msdosclustersize = msdosbps * spc;␊ |
| ␉msdoscurrent = ih;␊ |
| ␉␊ |
| ␉msdosCacheBlockSize = (msdosclustersize > MAX_CACHE_BLOCKSIZE) ? msdosclustersize : MAX_CACHE_BLOCKSIZE;␊ |
| ␉CacheInit(ih, msdosCacheBlockSize);␊ |
| ␉CacheInit(ih, msdosclustersize);␊ |
| ␉free (buf);␊ |
| ␉return 0;␊ |
| }␊ |
|
| static int␊ |
| readSectorAligned(CICell ih, off_t readOffset, char *buf, int size)␊ |
| {␊ |
| long long sectorOffset = (uint64_t)readOffset / msdosCacheBlockSize * msdosCacheBlockSize;␊ |
| long relOffset = readOffset % msdosCacheBlockSize;␊ |
| long long sectorOffset = (uint64_t)readOffset / msdosclustersize * msdosclustersize;␊ |
| long relOffset = readOffset % msdosclustersize;␊ |
| char *cacheBuffer;␊ |
| ␊ |
| cacheBuffer = malloc(msdosCacheBlockSize);␊ |
| CacheRead(ih, cacheBuffer, sectorOffset, msdosCacheBlockSize, true);␊ |
| cacheBuffer = malloc(msdosclustersize);␊ |
| CacheRead(ih, cacheBuffer, sectorOffset, msdosclustersize, true);␊ |
| bcopy(cacheBuffer + relOffset, buf, size);␊ |
| free(cacheBuffer);␊ |
| ␊ |
